Revision 9e3a9d1ed8cc8db93e5c53e9a5b09065bd95de8b authored by Len Brown on 06 February 2009, 19:00:56 UTC, committed by Len Brown on 06 February 2009, 19:00:56 UTC
When ACPI is disabled in the BIOS of this VIA C3 box, it invalidates the RSDP, which Linux notices: ACPI Error (tbxfroot-0218): A valid RSDP was not found [20080926] Bug Linux neglected to disable ACPI at that stage, and later scribbled on smp_found_config: ACPI: No APIC-table, disabling MPS But this box doesn't run well in legacy PIC mode, it needed IOAPIC mode to perform correctly: http://lkml.org/lkml/2009/2/5/39 So exit ACPI mode cleanly when we first detect that it is hopeless. Signed-off-by: Len Brown <len.brown@intel.com>
1 parent f3b39f1
mac_asc.h
/*
* Apple Sound Chip
*/
#ifndef __ASM_MAC_ASC_H
#define __ASM_MAC_ASC_H
/*
* ASC offsets and controls
*/
#define ASC_BUF_BASE 0x00 /* RAM buffer offset */
#define ASC_BUF_SIZE 0x800
#define ASC_CONTROL 0x800
#define ASC_CONTROL_OFF 0x00
#define ASC_FREQ(chan,byte) ((0x810)+((chan)<<3)+(byte))
#define ASC_ENABLE 0x801
#define ASC_ENABLE_SAMPLE 0x02
#define ASC_MODE 0x802
#define ASC_MODE_SAMPLE 0x02
#define ASC_VOLUME 0x806
#define ASC_CHAN 0x807 /* ??? */
#endif
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